Camera Optical Lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens includes, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material, and the seventh lens is made of plastic material. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5;

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6, and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface S1.The first lens L1 is made of glass material, the second lens L2 is madeof plastic material, the third lens L3 is made of plastic material, thefourth lens L4 is made of plastic material, the fifth lens L5 is made ofplastic material, the sixth lens L6 is made of plastic material, and theseventh lens L7 is made of plastic material. This design effectivelyimproves the optical performance of the camera optical lens 10, andprovides the camera lens 10 with better reliability under differentconditions of temperature and humidity.

In this embodiment, the first lens L1 has a positive refractive powerwith a convex object side surface relative to the proximal axis, thesecond lens L2 has a negative refractive power with a concave image sidesurface relative to the proximal axis, the third lens L3 has a negativerefractive power with a concave object side surface relative to theproximal axis, the fourth lens L4 has a positive refractive power with aconvex image side surface relative to the proximal axis, the fifth lensL5 has a positive refractive power with a convex object side surfacerelative to the proximal axis and a concave image side surface relativeto the proximal axis, the sixth lens L6 has a positive refractive powerwith a convex object side surface relative to the proximal axis, theseventh lens L7 has a negative refractive power with a concave objectside surface relative to the proximal axis.

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens L1 is defined as f1, the focallength of the third lens L3 is defined as f3, the focal length of thefourth lens L4 is defined as f4, the refractive power of the first lensL1 is defined as n1, the thickness on-axis of the first lens L1 isdefined as d1, the total optical length of the camera optical lens 10 isdefined as TTL, the curvature radius of the object side surface of theseventh lens L7 is defined as R13, the curvature radius of the imageside surface of the seventh lens L7 is defined as R14. The f, f3, f4,n1, d1, r13 and r14 satisfies the following condition: 1<f1/f<1.5,1.70<n1<2.2, −2<f3/f4<2; −10<(R13+R14)/(R13−R14)<10; 0.01<d1/TTL<0.05.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the focal length of the first lens L1 is defined asf1, the focal length of the second lens L2 is defined as f2, the focallength of the third lens L3 is defined as D, the focal length of thefourth lens L4 is defined as f4, the focal length of the fifth lens L5is defined as f5, the focal length of the sixth lens L6 is defined as f6and the focal length of the seventh lens L7 is defined as f7. Here thefollowing condition should satisfied: 1.5<f1<5, −15<f2<−4, −15<f3<−7.5,2<f4<8, 20<f5<50, 5<f6<10, −6<r<−1. The unit of distance, radius andcenter thickness is mm. With such design, the total optical length TTLof the whole camera optical lens 10 can be made as short as possible,thus the miniaturization characteristics can be maintained.

The refractive power of the second lens L2 is defined as n2, therefractive power of the third lens L3 is defined as n3, the refractivepower of the fourth lens L4 is defined as n4, the refractive power ofthe fifth lens L5 is defined as n5, the refractive power of the sixthlens L6 is defined as n6 and the refractive power of the seventh lens L7is defined as n7. Preferably, the following condition shall besatisfied, 1.60<n2<1.70, 1.60<n3<1.70, 1.5<n4<1.65, 1.50<n5<1.65,1.50<n6<1.65, 1.50<n7<1.65. Such design enables the lenses made fromdifferent optical materials to match each other better, and furtherenables the camera lens 10 to perform better imaging quality.

In this embodiment, the abbe number of the first lens L1 is defined asv1, the abbe number of the second lens L2 is defined as v2, the abbenumber of the third lens L3 is defined as v3, the abbe number of thefourth lens L4 is defined as v4, the abbe number of the fifth lens L5 isdefined as v5, the abbe number of the sixth lens L6 is defined as v6,and the abbe number of the seventh lens L3 is defined as v7. Here thefollowing condition should satisfied: 40<v1<65, 15<v2<30, 15<v3<30,40<v4<65, 40<v5<65, 40<v6<65, 40<v7<65. This design can suppress opticalcolor difference when the optical lens 10 works.

Configurations of refractive index and abbe number of the lensesmentioned above can be combined and applied for designing the cameraoptical lens 10. Therefore, the second lens L2 and the third lens L3made from optical materials with high refractive index and low abbenumber can effectively reduce color difference of the system and greatlyimprove the imaging quality of the camera optical lens 10.

Besides, surfaces of the lens are configured to be aspherical forapproaching more controllable variables to correct aberrations, reducethe amount of the lenses, and further to reduce the total length of thecamera lens.

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 focal length (mm) f 3.994 f1 3.998 f2 −9.424 f3 −10.037 f4 6.263f5 25.018 f6 6.367 f7 −2.987 f12 6.168

Where:

In which, the meaning of the various symbols is as follows.

f: the focal length of the camera optical lens;

f1: the focal length of the first lens;

f2: the focal length of the second lens;

f3: the focal length of the third lens;

f4: the focal length of the fourth lens;

f5: the focal length of the fifth lens;

f6: the focal length of the sixth lens;

f7: the focal length of the seventh lens;

f12: the combined focal length of the first lens and the second lens;

TABLE 2 Curvature radius Thickness/Distance Refractive power Abbe number(R) (mm) (d) (mm) (nd) (νd) St St ∞ d0 = −0.200 L1 R1 2.049 d1 = 0.250nd1 1.7250 ν1 56.10 R2 6.567 d2 = 0.223 L2 R3 8.651 d3 = 0.236 nd21.6450 ν2 22.44 R4 3.548 d4 = 0.316 L3 R5 −5.627 d5 = 0.200 nd3 1.6450ν3 23.50 R6 −43.756 d6 = 0.038 L4 R7 5.672 d7 = 0.550 nd4 1.5440 ν456.10 R8 −8.312 d8 = 0.580 L5 R9 8.393 d9 = 0.480 nd5 1.5350 ν5 56.10R10 21.920 d10 =  0.240 L6 R11 2.014 d11 =  0.396 nd6 1.5350 ν6 56.10R12 4.563 d12 =  0.496 L7 R13 −6.143616 d13 =  0.270 nd7 1.5350 ν7 56.10R14 2.204163 d14 =  0.100 Glass R15 ∞ d15 =  0.210 ndg 1.5160 νg 64.16R16 ∞ d16 =  0.465

In which, R1 and R2 represent respectively the object side surface andimage side surface of the first lens L1, R3 and R4 representrespectively the object side surface and image side surface of thesecond lens L2, R5 and R6 represent respectively the object side surfaceand image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7, R15 and R16represent respectively the object side surface and image side surface ofthe optical filter GF. Other, the meaning of the various symbols is asfollows.

d0: The distance on-axis from aperture St to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd1: The refractive power of the first lens L1;

nd2: The refractive power of the second lens L2;

nd3: The refractive power of the third lens L3;

nd4: The refractive power of the fourth lens L4;

nd5: The refractive power of the fifth lens L5;

nd6: The refractive power of the sixth lens L6;

nd7: The refractive power of the seventh lens L7;

ndg: The refractive power of the optical filter GF;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF.

Table 3 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 3 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −2.8646E−01  7.5536E−03 2.5725E−03  1.0962E−04  1.7813E−02−3.9834E−02  4.0453E−02 −1.6123E−02 R2 −1.5622E+00 −1.3578E−026.5241E−03  1.9124E−02 −4.1164E−02  4.8501E−02 −3.0241E−02  6.7255E−03R3  6.6441E+01 −6.7514E−02 4.8807E−02  4.4343E−02 −1.5379E−01 2.0444E−01 −1.5018E−01  4.8182E−02 R4 −2.9989E+01  2.5879E−02−6.6482E−02   2.0644E−01 −4.3424E−01  5.7199E−01 −4.5016E−01  1.4667E−01R5  1.9947E+01 −9.8166E−02 −9.8993E−02   1.3412E−01 −7.0964E−02−5.0935E−02  6.5289E−02 −2.5562E−02 R6 −9.0000E+01 −1.1086E−016.0203E−02 −1.7958E−02  7.5596E−02 −1.6242E−01  1.4397E−01 −4.3299E−02R7  1.5529E+01 −1.0753E−01 1.5207E−01 −1.5270E−01  9.8412E−02−5.5577E−02  2.5642E−02 −5.2587E−03 R8 −7.0884E+01 −1.0181E−013.6373E−02 −1.2221E−02 −4.9693E−03  1.4911E−02 −1.2460E−02  3.9343E−03R9 −1.2709E+01 −8.0732E−02 2.3465E−02 −3.0632E−02  2.5703E−02−1.0518E−02  2.7583E−03 −3.8298E−04 R10  5.0756E+01 −1.8671E−019.6986E−02 −4.1056E−02  1.1593E−02 −3.8124E−04 −2.0982E−04 −9.4187E−06R11 −3.7068E+00 −7.7694E−02 −7.6904E−02   5.4646E−02 −3.9895E−03−1.2166E−02  5.1539E−03 −6.0784E−04 R12  2.8347E+00  5.2872E−02−2.2099E−01   1.8426E−01 −8.4385E−02  2.1939E−02 −2.9799E−03  1.6324E−04R13  6.6077E+00 −2.5193E−01 1.5927E−01 −3.8749E−02  1.6800E−03 1.1944E−03 −2.4312E−04  1.4575E−05 R14 −1.1994E+01 −1.6913E−011.1861E−01 −4.8441E−02  1.2200E−02 −1.8702E−03  1.5923E−04 −5.7741E−06

Table 4 and table 5 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 4 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 0 R2 0 R3 0 R4 1 0.785 R5 0R6 1 0.895 R7 0 R8 1 1.175 R9 3 0.365 1.315 1.465 R10 2 0.145 1.245 R112 0.535 1.575 R12 2 0.595 1.665 R13 2 1.165 1.985 R14 1 0.435

TABLE 5 Arrest point number Arrest point position 1 R1 0 R2 0 R3 0 R4 0R5 0 R6 0 R7 0 R8 0 R9 1 0.625 R10 1 0.255 R11 1 0.925 R12 1 0.965 R13 0R14 1 1.005

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment.

Table 11 shows the various values of the embodiments 1, 2, and thevalues corresponding with the parameters which are already specified inthe conditions.

As shown in Table 11, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2 mm, the full vision field image height is 2.9335 mm, thevision field angle in the diagonal direction is 72.04°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 6 and table 7 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 6 focal length (mm) f 3.994 f1 4.034 f2 −4.5048 f3 −8.91132 f48.926 f5 12.538 f6 6.0256 f7 −3.041 f12 5.8325

TABLE 7 Curvature radius Thickness/Distance Refractive power Abbe number(R) (mm) (d) (mm) (nd) (νd) St St ∞ d0 = −0.200 L1 R1 2.049 d1 = 0.252nd1 1.7250 ν1 56.10 R2 6.444 d2 = 0.198 L2 R3 8.513 d3 = 0.261 nd21.6450 ν2 22.44 R4 3.804 d4 = 0.361 L3 R5 −5.083 d5 = 0.201 nd3 1.6400ν3 23.53 R6 −44.806 d6 = 0.053 L4 R7 5.780 d7 = 0.550 nd4 1.5440 ν456.10 R8 −29.984 d8 = 0.397 L5 R9 5.537 d9 = 0.495 nd5 1.5350 ν5 56.10R10 30.211 d10 =  0.288 L6 R11 1.951 d11 =  0.361 nd6 1.5350 ν6 56.10R12 4.597 d12 =  0.631 L7 R13 −5.643586 d13 =  0.275 nd7 1.5350 ν7 56.10R14 2.336798 d14 =  0.412 Glass R15 ∞ d15 =  0.210 ndg 1.5160 νg 64.16R16 ∞ d16 =  0.159

Table 8 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 8 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −2.7444E−01  −2.3103E−02 0.0000E+00 0.0000E+00 7.8891E−02 −2.6769E−020.0000E+00 0.0000E+00 R2 −1.6598E+00   1.6504E−02 0.0000E+00 0.0000E+00−2.9344E−02   6.2678E−03 0.0000E+00 0.0000E+00 R3 6.3386E+01 −2.4518E−020.0000E+00 0.0000E+00 1.2659E−02 −4.4985E−03 0.0000E+00 0.0000E+00 R4−3.2513E+01   1.0719E−01 0.0000E+00 0.0000E+00 −2.2611E−01   7.3200E−020.0000E+00 0.0000E+00 R5 1.8798E+00 −1.0364E−01 −7.4728E−02  1.7799E−01−2.9321E−01   3.1541E−01 −2.0665E−01  5.5851E−02 R6 8.8512E+01−9.9055E−02 4.0565E−02 3.6542E−02 −5.7239E−02   2.9558E−02 7.4780E−03−6.5386E−03  R7 1.4785E+01 −8.9835E−02 1.1157E−01 −1.0753E−01 6.8190E−02 −3.4228E−02 1.3085E−02 −2.3588E−03  R8 3.8096E+01 −1.0817E−014.9528E−02 −3.9352E−02  3.1934E−02 −1.6248E−02 3.3473E−03 1.7648E−04 R9−5.0982E+00  −8.6610E−02 3.9005E−02 −3.8238E−02  2.5155E−02 −7.7691E−031.4806E−03 −1.8254E−04  R10 9.0000E+01 −1.7781E−01 1.1790E−01−6.7422E−02  2.6091E−02 −5.3547E−03 8.8359E−04 −1.1723E−04  R11−3.2201E+00  −8.6826E−02 −5.1049E−02  4.4072E−02 −1.1238E−02 −4.6692E−03 2.8525E−03 −3.6550E−04  R12 2.9065E+00  3.2805E−02−1.7567E−01  1.5245E−01 −7.4473E−02   2.0730E−02 −2.9916E−03  1.7264E−04R13 4.0830E+00 −2.1902E−01 1.3432E−01 −3.4262E−02  2.3822E−03 8.4814E−04 −1.9788E−04  1.2445E−05 R14 −1.3578E+01  −1.3054E−018.3482E−02 −3.2650E−02  7.9724E−03 −1.1920E−03 9.9297E−05 −3.5304E−06 

Table 9 and table 10 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 9 Inflexion Inflexion Inflexion Inflexion point point point pointnumber position 1 position 2 position 3 R1 0 R2 0 R3 0 R4 1 0.785 R5 0R6 1 0.885 R7 0 R8 1 1.245 R9 3 0.455 1.235 1.535 R10 2 0.135 1.245 R112 0.55 1.585 R12 2 0.605 1.625 R13 2 1.275 2.005 R14 1 0.465

TABLE 10 Arrest point Arrest point number Arrest point position 1position 2 R1 0 R2 0 R3 0 R4 0 R5 0 R6 1 1.095 R7 0 R8 0 R9 1 0.805 R102 0.225 1.555 R11 1 0.975 R12 1 1.005 R13 0 R14 1 1.085

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 11, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2 mm, the full vision field image height is 2.9335 mm, thevision field angle in the diagonal direction is 72.05°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 11 Embodiment 1 Embodiment 2 1 < f1/f < 1.5 1.0010015021.010015023 −2 < f3/f4 < 2 −1.60258662 −0.998355366 1.70 < n1 < 2.21.7250 1.7250 −10 < (R13 + R14)/(R13 − 0.471916303 0.414364522 R14) < 100.01 < d1/TTL < 0.05 0.049513593 0.049345896

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens having a positiverefractive power, a second lens having a negative refractive power, athird lens having a negative refractive power, a fourth lens having apositive refractive power, a fifth lens having a positive refractivepower, a sixth lens having a positive refractive power, a seventh lenshaving a negative refractive power; wherein the camera optical lensfurther satisfies the following conditions:1<f1/f<1.5;1.70<n1<2.2;−2<f3/f4<2;−10<(R13+R14)/(R13−R14)<10;0.01<d1/TTL<0.05; where f: the focal length of the camera optical lens;f1: the focal length of the first lens; f3: the focal length of thethird lens; f4: the focal length of the fourth lens; n1: the refractivepower of the first lens; d1: the thickness on-axis of the first lens;TTL: the total optical length of the camera optical lens; R13: thecurvature radius of object side surface of the seventh lens; R14: thecurvature radius of image side surface of the seventh lens.
 2. Thecamera optical lens as described in claim 1, wherein the first lens ismade of glass material, the second lens is made of plastic material, thethird lens is made of plastic material, the fourth lens is made ofplastic material, the fifth lens is made of plastic material, the sixthlens is made of plastic material, the seventh lens is made of plasticmaterial.
 3. The camera optical lens as described in claim 1 furthersatisfying the following conditions:1.5<f1<5;−15<f2<−4;−15<f3<−7.5;2<f4<8;20<f5<50;5<f6<10;−6<f7<−1; where f1: the focal length of the first lens; f2: the focallength of the second lens; f3: the focal length of the third lens; f4:the focal length of the fourth lens; f5: the focal length of the fifthlens; f6: the focal length of the sixth lens; f7: the focal length ofthe seventh lens.
 4. The camera optical lens as described in claim 1,further satisfying the following conditions:1.60<n2<1.70;1.60<n3<1.70;1.50<n4<1.65;1.50<n5<1.65;1.50<n6<1.65;1.50<n7<1.65; where n2: the refractive power of the second lens; n3: therefractive power of the third lens; n4: the refractive power of thefourth lens; n5: the refractive power of the fifth lens; n6: therefractive power of the sixth lens; n7: the refractive power of theseventh lens.
 5. The camera optical lens as described in claim 1 furthersatisfying the following conditions:40<v1<65;15<v2<30;15<v3<30;40<v4<65;40<v5<65;40<v6<65;40<v7<65; where v1: The abbe number of the first lens; v2: The abbenumber of the second lens; v3: The abbe number of the third lens; v4:The abbe number of the fourth lens; v5: The abbe number of the fifthlens; v6: The abbe number of the sixth lens; v7: The abbe number of theseventh lens.